Definition of "efficacy" in İngilizce

noun

1. The ability to produce a desired effect under ideal testing conditions.

   • 2005, Flay et al. Standards of Evidence: Criteria for Efficacy, Effectiveness and Dissemination DOI: 10.1007/s11121-005-5553-y Efficacy refers to the beneficial effects of a program or policy under optimal conditions of delivery, whereas effectiveness refers to effects of a program or policy under more real-world conditions.

2. A degree of ability to produce a desired effect; effectiveness.

   • Toothbrush with improved efficacy